Subtract 6/9 from 80/49, Solve 1 31/49

Subtract 6/9 from 80/49

1^st number: 1 31/49, 2^nd number: 6/9

80/49 - 6/9 is 142/147.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 is 441

Next, find the equivalent fraction of both fractional numbers with denominator 441
For the 1st fraction, since 49 × 9 = 441,
80/49 = 80 × 9/49 × 9 = 720/441
Likewise, for the 2nd fraction, since 9 × 49 = 441,
6/9 = 6 × 49/9 × 49 = 294/441
Subtract the two like fractions:
720/441 - 294/441 = 720 - 294/441 = 426/441
After reducing the fraction, the answer is 142/147

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